## Calculations of properties of screened He-like systems using correlated wave functions.

- S T Dai, A Solovyova, P Winkler
- Physical review. E, Statistical, nonlinear, and…
- 2001

- Published 1999

A general firstand second-order theory of besm transport optics has been developed, From this the firstand second-order matrix elements of bending magnets, quadrupoles and sextupoles have been derived. Utilizing this theory, very general firstand second-order theorems of beam transport optics have been formulated which have been extremely useful for designing single and multiple element magnetic optical systems, Ihe theorems are expressed as functions of five characteristic firstorder trajectories of a system. In fact, all of the firstand second-order optical properties of a system may be expressed in terms of these five trajectories. A general discussion of the formulation and the results obtained will be presented along with typical examples to illustrate their usefulness.

@inproceedings{Brown1999IS,
title={I Slac - Pub - 0142 a General First - and Second - Cbbeb Theory of Beam},
author={K. L. Brown},
year={1999}
}